We know Jennifer Aniston isn't a big believer in dieting, but we're guessing McDonald's isn't usually on the menu!!

The We Are The Millers actress recently opened up about some of the secrets to her skinniness (it's all about sunshine and smiling, for those of you who missed out), but apparently she found herself in a situation where she was forced to do the unthinkable:

Eat a Big Mac!!!

Jen says she and her fiancé Justin Theroux were on the road when they had no choice but to indulge on the greasy meal:

"I'll never forget when Justin and I were on a road trip and we were so hungry. The only thing around was McDonald's. I think I ordered a Big Mac. Wow, my body did not react well to that! It was like putting gasoline in a purified system. I am always trying to eat organic and natural foods, so that just made my stomach turn and made me feel terrible. And I think what you put in your body, as well as stress, is reflected in the quality of your skin."

Hmmm. We guess she's more of a Burger King kind of gal! LOLz!

There's nothing wrong with snacking on some greasy goodness from time to time (seriously, who doesn't LOVE those fries)!

But if your body's not used to the food, you might not be happy with the results!

If your system is that delicate, then get the fish sandwich. Seriously, people need to mix up their choices so that their body is good with anything. Little kids who live in too clean homes get ill more frequently than kids who crawl around on their hands in a sort of clean home because they develop better immune systems from exposure. Food purists need to lighten up, because they're teaching their body to be finicky. Sure, eat cleanly, but the odd thing shouldn't be a worry.

Something feels wrong about her story. There are salads at mc Donald's. There are also smaller hamburger, chicken and fish. She goes for the biggest and most unhealthy option? If she really cares about preserving her "temple" then she should carry her special elite organic snacks when she's on a roadtrip. And if she lacks that foresight then she should spend more time thinking about her menu choices. In the end, I think she is just lying, in a failed attempt to be funny.